Alert archive / Illinois / River Flood Warnings in 2016

River Flood Warning 20, NWS Chicago, IL

August 20, 2016Iroquois County, Illinois

NWS Chicago, IL issued this river flood warning at Aug 20, 2016, 9:17 PM CDT for Iroquois County, Illinois. It took effect at Aug 21, 2016, 6:20 AM CDT. It was in force for 4 days.

The area

The counties it named.

The facts

Issued: Aug 20, 2016, 9:17 PM CDT (02:17 UTC)
In effect from: Aug 21, 2016, 6:20 AM CDT
Expired: Aug 24, 2016, 8:12 PM CDT
In force: 4 days
Issued by: NWS Chicago, IL
Area: Storm-based polygon
Flood severity: Minor

County Iroquois County, IL

The radar

The Chicago radar (KLOT), 98 km from the middle of the area, began a volume at 02:17 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The river

Written for the forecast point Iroquois River at Iroquois (IRQI2).

Action stage: 17 ft
Minor stage: 18 ft
Moderate stage: 24 ft
Major stage: 25 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05525000, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

What forecasters said that day

The local office's own words before this river flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Chicago, IL wrote its last area forecast discussion before this river flood warning went out at Aug 20, 6:05 PM CDT, 3 hours 12 minutes earlier.

Area forecast discussion, Aug 20, 6:05 PM CDT, 3 hours 12 minutes before

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Hazardous weather outlook, Aug 20, 3:44 PM CDT, 5 hours 33 minutes before

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<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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    </section>
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</body>
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The office that day

Everything else NWS Chicago, IL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 20, 9:27 PM CDT	River Flood Advisory	LOT	Kankakee	40 hr
Aug 20, 9:27 PM CDT	River Flood Advisory	LOT	Grundy, Will	3 days
Aug 20, 9:27 PM CDT	River Flood Advisory	LOT	Bureau, LaSalle, Putnam	3 days
Aug 20, 9:38 PM CDT	River Flood Advisory	LOT	LaSalle	48 hr
Aug 21, 9:43 AM CDT	River Flood Advisory	LOT	Jasper	20 hr

Nearby

River Flood Warnings in Illinois, 2016 Every river flood warning in 2016

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.